Pulp stopper.



PATENTED OCT. l0, 1905.

R. W. GOEB.

PULP STOPPER.

APPLICATION FILED JAN.19, 1905.

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UNITED STATES PATENT OEEIOE.

RUDOLPH W. GOEB, OF ST. LOUIS, MISSOURI, ASSIGNOR TO UNITED STATES FIBERSTOPPER COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF SOUTH DAKOTA.

PULP STOPPER.

Specification of Letters Patent.

Patented oet. 1o, 1905.

To [all whom it may concern.-

Be it known that I, RUDOLPH 1W. Gone, a citi- Zen of the United States,residing at St. Louis, Missouri, have invented a certain new and usefulImprovement in Pulp Stoppers, of which the following is a full, clear,and exact description, such as will enable others skilled in the art towhich it appertains to make and use the same, reference being had to theaccompanying drawings, forming part of this specification, in which-Figure l is a perspective view of my improved stopper, and Eig. 2 is avertical longitudinal sectional view through the same.

This invention relates to a new and useful improvement in stoppers forbottles and the like, the object being to produce a stopper from fibrousmaterial, such as paper-pulp, which is impervious to the contents of themake a tight joint, one which has a hard-finished surface, preventingthe stopper from unduly swelling, one which is durable and light, andone which is cheap and easily made.

iVith these objects in view the invention consists in the construction,arrangement, and combination of the several parts of the inveiition, allas will be hereinafter described and afterward pointed out in theclaims.

In the drawings the stopper is shown as an ordinary bottle-stopper whosebody portion is tapered, as usual, for well-understood purposes. Thestopper shown in the accompanying drawings is designed as an improvementupon the stopper' shown in the Rivers patent,- No. 726,761, dated April28, 1903. In the stopper shown in the said Rivers patent the principalfibers lie in a direction parallel to the axis and diverge outwardly atthe ends of the stopper, the fibers at the ends of the stopper lying inplanes at angles to the firstmentioned fibers, the surface of thestopper being calender-ed to preserve its shape. It has been found inthis art of manufacturing Stoppers and like articles from paper-pulpthat the fibers of the pulp will arrange themselves substantially atright angles to the direction of applied lpressure as long as thedensity of the pulp is sufficiently low to permit of the movement of thefibers in such an arrangement. Of course, when the density is increasedthe fibers are restrained from free movement, and consequently areliable to maintain their original position or become 'to have movementto endwise pressure. .fibers at the ends of the stopper, as indicatedbottle, one which is sufhciently yielding to bent at one end, eventhough the restraining infiuence preserves the alinement of the otherend of any given fiber.

The stopper shown in the accompanying drawings is produced by anapparatus shown and described in an application for patent filed by meof even date herewith, Serial No. 241,865, and I will, therefore, nothere describe the method therein disclosed, nor will I further refer tothe apparatus and details of construction and operation.

In the accompanying drawings the center of the stopper has its fiberslying in angular relations to each other, as indicated at l, which isthe result of subjecting a stopper, such as shown in said Rivers patent,when the density thereof is sufficiently low to permit the fibers The at2, lie principally in planes transverse to the 'axis of the stopper,while the surface of the :stopper is calendered, as at 3.

I am aware that changes in the form, pioportion` and minor details of myinvention can be made and substituted for those herein shown anddescribed without in the least departing from the nature and principleof my invention.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, isw

l. As a new article of manufacture, a pulp stopper whose central ormiddle portion is composed of fibers lying in angular relations to eachother; substantially as described.

2. As a new article of manufacture, a pulp stopper whose central ormiddle portion is composed of fibers lying at angles to each other andwhose end fibers lie principally in planes transverse to the axis of thestopper; substantially as described.

3. As a new article of manufacture, a pulp stopper whose central ormiddle portion is composed of fibers lying principally in angularrelations to each other, the periphery of said stopper being calendered;substantially as described.

In testimony whereof I hereunto affix my signature, in the presence oftwo witnesses,this 5th day of January, 1905.

RUDOLPH IV. GOEB. iVitnesses:

F. R. CoRNwALL, GEORGE BAKEWELL.

IOO

